3. Buy frozen produce.
Forget the frozen lasagna and the mushy vegetables with icky sauces—plain frozen produce is an excellent choice for the savvy healthy shopper. It’s convenient, less expensive, and equally—if not more—nutritious. Frozen produce is picked when ripe and at peak nutrition, and flash-frozen right away to retain maximum nutrients. By contrast, the “fresh” fruits and vegetables you get in the produce section are often picked early when under-ripe to withstand traveling and warehousing before they get to the store, which could be days, weeks, or even months later. Once a fruit or vegetable is picked, the nutrients generally start to diminish with time. So, although fresh local produce is your best bet, don’t be afraid to supplement with frozen. Another plus: If you don’t use up all of the fresh produce you buy, it spoils and you end up wasting it, but with frozen you cook what you need and leave the rest in the freezer for another meal.